[Nut-upsuser] PowerWalker VI 650 SB - Driver failed to start

[Jim Klimov]

Hello,

Looking at logged NUT issue discussions like
https://github.com/networkupstools/nut/issues/475,
https://github.com/networkupstools/nut/issues/483 and
https://github.com/networkupstools/nut/issues/646 I see people did have
success with models named similar to yours. So generally it should be
supported, with "liebert-hid" or better with "mge-hid" subdriver according
to reports... But then there were also users for whom it did not work, and
those for whom it disconnected after a few hours (causing a Stale Data
problem).

I would suggest first ruling out systemic issues (device node permissions
vs. user the driver runs as, some kernel quirks?, possibly a libusb version
mismatch - official NUT releases only offered libusb-0.1 compatibility and
solutions for libusb-1.0 were not merged yet, but there are branches on
GitHub to try if you would - linked from issue #300). Those "no route to
host" and "no such file" lines look most incorrect.

Does `nut-scanner` also fail to find and connect to the device?

Do you have udev or similar system that might grab the device and not let
NUT have it?

You can also try to pick configuration options in ups.conf section for your
device, or via `-x` CLI options while you experiment on command line, such
as to try setting the subdriver to use, or the `usb_set_altinterface=1` so
that the NUT driver tells libusb to disconnect other consumers from the
device, if I read the docs correctly.

Finally, it feels feasible that like some other recent devices, this one
might have a new revision where USB HID is not exposed on "interface 0" -
there is a PR open at https://github.com/networkupstools/nut/pull/1044 to
handle other interface numbers, so far for a couple of known devices where
that is needed.

Jim


On Tue, May 18, 2021 at 2:42 PM Detlef via Nut-upsuser <
nut-upsuser at alioth-lists.debian.net> wrote:

> I need help to find a way to start the usbhid-ups driver successfully, i
> always get a failed status after start of the driver
>
> THX
>
>
>
> used environment:
>
>    -
>
>    OS: 4.19.0-16-amd64 #1 SMP Debian 4.19.181-1 (2021-03-19) x86_64
>    GNU/Linux
>    -
>
>    NUT version 2.7.4
>    -
>
>    NUT installation method: apt-get install nut
>    -
>
>    UPS: PowerWalker VI 650 SB
>    -
>
>    problem description, with any relevant traces, like system log
>    excerpts, and driver debug output
>    -
>
>    lsusb
>    Bus 001 Device 003: ID 0764:0601 Cyber Power System, Inc.
>    PR1500LCDRT2U UPS
>    - cat /etc/nut/ups.conf
>    # Set maxretry to 3 by default, this should mitigate race with slow
>    devices:
>    maxretry = 3
>    [PowerWalker650]
>       driver  = usbhid-ups
>       port = auto
>       desc = "server"
>
>    - upsdrvctl start
>    Network UPS Tools - UPS driver controller 2.7.4
>    Network UPS Tools - Generic HID driver 0.41 (2.7.4)
>    USB communication driver 0.33
>    No matching HID UPS found
>    Driver failed to start (exit status=1)
>    Network UPS Tools - Generic HID driver 0.41 (2.7.4)
>    USB communication driver 0.33
>    No matching HID UPS found
>    Driver failed to start (exit status=1)
>    Network UPS Tools - Generic HID driver 0.41 (2.7.4)
>    USB communication driver 0.33
>    No matching HID UPS found
>    Driver failed to start (exit status=1)
>    -
>
>    You can obtain the latter using the following command, as root and
>    after having stopped NUT:
>
>    /path/to/driver -DD -a <upsname>
>
>    /lib/nut/usbhid-ups -DD -a PowerWalker650
>    Network UPS Tools - Generic HID driver 0.41 (2.7.4)
>    USB communication driver 0.33
>       0.000000     debug level is '2'
>       0.003634     upsdrv_initups...
>       0.026290     Checking device (1D6B/0003) (002/001)
>       0.043513     - VendorID: 1d6b
>       0.044473     - ProductID: 0003
>       0.044928     - Manufacturer: unknown
>       0.045433     - Product: unknown
>       0.045847     - Serial Number: unknown
>       0.046276     - Bus: 002
>       0.046843     - Device release number: 0419
>       0.047250     Trying to match device
>       0.047684     Device does not match - skipping
>       0.050203     Checking device (0764/0601) (001/003)
>       0.053610     - VendorID: 0764
>       0.054105     - ProductID: 0601
>       0.054620     - Manufacturer: 1
>       0.055013     - Product:  650
>       0.055434     - Serial Number:
>       0.055845     - Bus: 001
>       0.056418     - Device release number: 0200
>       0.056845     Trying to match device
>       0.057251     Device matches
>       0.057334     failed to claim USB device: could not claim interface
>    0: No such file or directory
>       0.057475     failed to detach kernel driver from USB device: could
>    not detach kernel driver from interface 0: No route to host
>       0.057554     failed to claim USB device: could not claim interface
>    0: No such file or directory
>       0.057600     failed to detach kernel driver from USB device: could
>    not detach kernel driver from interface 0: No route to host
>       0.057768     failed to claim USB device: could not claim interface
>    0: No such file or directory
>       0.057825     failed to detach kernel driver from USB device: could
>    not detach kernel driver from interface 0: No route to host
>       0.057870     failed to claim USB device: could not claim interface
>    0: No such file or directory
>       0.058006     failed to detach kernel driver from USB device: could
>    not detach kernel driver from interface 0: No route to host
>       0.058050     Can't claim USB device [0764:0601]: could not detach
>    kernel driver from interface 0: No route to host
>
>
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